org.gcube.dataaccess.spd.havingengine.exl
Class HavingFunctions

java.lang.Object
  org.gcube.dataaccess.spd.havingengine.exl.HavingFunctions

public class HavingFunctions
extends Object

Author:

"Federico De Faveri defaveri@isti.cnr.it"

Field Summary

protected HavingContext<?>	context
protected static Map<String,XPathExpression>	expression_cache
protected static org.slf4j.Logger	logger

Constructor Summary

HavingFunctions(org.apache.commons.jexl2.JexlContext context)

Method Summary

protected XPathExpression	buildExpression(String xpathExpression) Compiles the passed expression
boolean	exl(String exlExpression) EXL function.
protected XPathExpression	getExpression(String xpathExpression) Retrieved the compiled expression.
boolean	lucio(String expression)
boolean	xpath(String xpath) Xpath function.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

protected static org.slf4j.Logger logger

expression_cache

protected static Map<String,XPathExpression> expression_cache

context

protected HavingContext<?> context

Constructor Detail

HavingFunctions

public HavingFunctions(org.apache.commons.jexl2.JexlContext context)

Parameters:

context -

Throws:

ParserConfigurationException

Method Detail

xpath

public boolean xpath(String xpath)
              throws SAXException,
                     IOException,
                     XPathExpressionException

Xpath function.

Parameters:

xpath - the xpath expression to evaluate.

Returns:

true if the expression is evaluated true, false otherwise.

Throws:

SAXException - if an error occurs.

IOException - if an error occurs.

XPathExpressionException - if an error occurs.

getExpression

protected XPathExpression getExpression(String xpathExpression)
                                 throws XPathExpressionException

Retrieved the compiled expression.

Parameters:

xpathExpression -

Returns:

Throws:

XPathExpressionException

buildExpression

protected XPathExpression buildExpression(String xpathExpression)
                                   throws XPathExpressionException

Compiles the passed expression

Parameters:

xpathExpression -

Returns:

Throws:

XPathExpressionException

exl

public boolean exl(String exlExpression)

EXL function.

Parameters:

exlExpression - the exl expression to evaluate.

Returns:

lucio

public boolean lucio(String expression)